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Index: sys/vm/vm_meter.c
===================================================================
--- sys/vm/vm_meter.c
+++ sys/vm/vm_meter.c
@@ -366,7 +366,6 @@
VM_STATS_VM(v_intrans, "In transit page faults");
VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon");
VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups");
-VM_STATS_VM(v_pdpages, "Pages analyzed by pagedaemon");
VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls");
VM_STATS_VM(v_dfree, "Pages freed by pagedaemon");
VM_STATS_VM(v_pfree, "Pages freed by exiting processes");
@@ -438,8 +437,7 @@
return (v);
}
-static
-u_int
+static u_int
vm_pagequeue_count(int pq)
{
u_int v;
@@ -456,22 +454,41 @@
vm_active_count(void)
{
- return vm_pagequeue_count(PQ_ACTIVE);
+ return (vm_pagequeue_count(PQ_ACTIVE));
}
u_int
vm_inactive_count(void)
{
- return vm_pagequeue_count(PQ_INACTIVE);
+ return (vm_pagequeue_count(PQ_INACTIVE));
}
u_int
vm_laundry_count(void)
{
- return vm_pagequeue_count(PQ_LAUNDRY);
+ return (vm_pagequeue_count(PQ_LAUNDRY));
+}
+
+static int
+sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS)
+{
+ struct vm_pagequeue *pq;
+ uint64_t ret;
+ int dom, i;
+
+ ret = counter_u64_fetch(vm_cnt.v_pdpages);
+ for (dom = 0; dom < vm_ndomains; dom++)
+ for (i = 0; i < PQ_COUNT; i++) {
+ pq = &VM_DOMAIN(dom)->vmd_pagequeues[i];
+ ret += pq->pq_pdpages;
+ }
+ return (SYSCTL_OUT(req, &ret, sizeof(ret)));
}
+SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages,
+ CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU",
+ "Pages analyzed by pagedaemon");
static void
vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent)
@@ -488,15 +505,31 @@
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0,
"Active pages");
+ SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
+ "actpdpgs", CTLFLAG_RD,
+ &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0,
+ "Active pages scanned by the page daemon");
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0,
"Inactive pages");
+ SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
+ "inactpdpgs", CTLFLAG_RD,
+ &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0,
+ "Inactive pages scanned by the page daemon");
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0,
"laundry pages");
+ SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
+ "laundpdpgs", CTLFLAG_RD,
+ &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0,
+ "Laundry pages scanned by the page daemon");
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable",
CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0,
"Unswappable pages");
+ SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
+ "unswppdpgs", CTLFLAG_RD,
+ &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0,
+ "Unswappable pages scanned by the page daemon");
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0,
"Target inactive pages");
Index: sys/vm/vm_page.c
===================================================================
--- sys/vm/vm_page.c
+++ sys/vm/vm_page.c
@@ -428,6 +428,7 @@
TAILQ_INIT(&pq->pq_pl);
mtx_init(&pq->pq_mutex, pq->pq_name, "vm pagequeue",
MTX_DEF | MTX_DUPOK);
+ pq->pq_pdpages = 0;
}
mtx_init(&vmd->vmd_free_mtx, "vm page free queue", NULL, MTX_DEF);
snprintf(vmd->vmd_name, sizeof(vmd->vmd_name), "%d", domain);
Index: sys/vm/vm_pageout.c
===================================================================
--- sys/vm/vm_pageout.c
+++ sys/vm/vm_pageout.c
@@ -731,13 +731,17 @@
KASSERT(queue_locked, ("unlocked laundry queue"));
KASSERT(vm_page_in_laundry(m),
("page %p has an inconsistent queue", m));
+
+ pq->pq_pdpages++;
next = TAILQ_NEXT(m, plinks.q);
if ((m->flags & PG_MARKER) != 0)
continue;
+
KASSERT((m->flags & PG_FICTITIOUS) == 0,
("PG_FICTITIOUS page %p cannot be in laundry queue", m));
KASSERT((m->oflags & VPO_UNMANAGED) == 0,
("VPO_UNMANAGED page %p cannot be in laundry queue", m));
+
if (!vm_pageout_page_lock(m, &next) || m->hold_count != 0) {
vm_page_unlock(m);
continue;
@@ -1170,13 +1174,9 @@
KASSERT(queue_locked, ("unlocked inactive queue"));
KASSERT(vm_page_inactive(m), ("Inactive queue %p", m));
- VM_CNT_INC(v_pdpages);
+ pq->pq_pdpages++;
next = TAILQ_NEXT(m, plinks.q);
-
- /*
- * skip marker pages
- */
- if (m->flags & PG_MARKER)
+ if ((m->flags & PG_MARKER) != 0)
continue;
KASSERT((m->flags & PG_FICTITIOUS) == 0,
@@ -1429,24 +1429,22 @@
scanned++) {
KASSERT(m->queue == PQ_ACTIVE,
("vm_pageout_scan: page %p isn't active", m));
+
+ pq->pq_pdpages++;
next = TAILQ_NEXT(m, plinks.q);
if ((m->flags & PG_MARKER) != 0)
continue;
+
KASSERT((m->flags & PG_FICTITIOUS) == 0,
("Fictitious page %p cannot be in active queue", m));
KASSERT((m->oflags & VPO_UNMANAGED) == 0,
("Unmanaged page %p cannot be in active queue", m));
+
if (!vm_pageout_page_lock(m, &next)) {
vm_page_unlock(m);
continue;
}
- /*
- * The count for page daemon pages is updated after checking
- * the page for eligibility.
- */
- VM_CNT_INC(v_pdpages);
-
/*
* Wired pages are dequeued lazily.
*/
Index: sys/vm/vm_pagequeue.h
===================================================================
--- sys/vm/vm_pagequeue.h
+++ sys/vm/vm_pagequeue.h
@@ -71,6 +71,7 @@
struct pglist pq_pl;
int pq_cnt;
const char * const pq_name;
+ uint64_t pq_pdpages;
} __aligned(CACHE_LINE_SIZE);
#include <sys/pidctrl.h>

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